Electric controller.



PATENTED JAN. 10, 1905.

- A. SUNDH.

ELECTRIC CONTROLLER.

APPLIOATION FILED JUNE 3, 1904.

"FIG-l.

V WiTNESSES:

J. 07 mm MOM WW.

N0. 779,447. Patented January 10, 1905.

UNITED STATES PATENT OFFICE.

AUGUST SUNDH, YONKERS, NEW YORK, ASSIGNOR TO THE SUNDH ELECTRIC COMPANY, A CORPORATION OF NEWV YORK.

ELECTRIC CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 779,447, dated January 10, 1905.

Application filed June 3,1904. Serial N0. 211,019.

T all whom it y cmwem: tact with the fixed terminal 11. To said pin Be it known that 1, AUGUST SUNDH, of is secured the circuit-wire a. Yonkers,Westchester county, New York,have The movable core 12 of the solenoid 1 has a 50 invented a new and useful Improvement in long guide-slot, through which passes the 5 Electric Controllers, of which the following is fixed pin 13 in lower head 4. Said core cara specification. ries a cross-bar 15, having its upper edge 16 The invention relates to electromagnetic at one end rounded to meet the rounded lower controlling apparatus for electric motors and extremity of lever 5. The other end of said 55 other translating devices, and more particubar is provided with a cylindrical flanged I larly to the controller set forth in United sleeve 17 of insulating material, which passes States Letters Patent No. 733,563, granted to through openings in the forked lower end of me July 14, 1903. the contact-arm 18. Said arm slides over the The object is to simplify the construction fixed contact-plates 19 2O 21 22 23 and is held 6 so that a single electromagnet may serve, by closely against said plates by the coiled spring means of a single circuit-closer, to control 2 1, one end of which is secured to bar and circuit in the motor or other translating dethe other end bears against the outer surface vice and also actuate a sliding arm whereby of said arm. Between the plates 19 to 23 are resistances are cut out of or into the circuit resistances A B C D. On the lower side of 65 of said device in starting and stopping the bar 15 are projections 25, constructed to meet same. elastic cushions 26, seated in the cover of the The invention consists in the combinations dash-pot cylinder 27. Said cylinder contains more particularly pointed out in the claims. a piston 28, having air-openings covered by a In the accompanying drawings, Figure 1 is loose valve 29, through which valve the pis- 7 an elevation of my controller, showing the ton-rod passes. Said rod is jointed at 31 5 circuits and the motor controlled diagram and again at 32, where it is connected to the matically. Figs. 2 and 3 are detailed views in lower end of the solenoid-core 12. Air-preselevation and plan of the device for posisure in the dash-pot may be regulated by the tively actuating the lever 5. adjustable split screw 33, seated in a boss in 75 Similar characters of reference indicate like the lower portion of the cylinder 27. 3 parts. The circuits are as follows: One branch 1 is a solenoid supported on the plate 2 beproceeds from main terminal, when the tween heads 3 and 4:, which may be of maghand-switch 34L is closed, by wire 0 to and netic material. Pivoted in lugs on the lower through the solenoid-coil, by wire 6 to switch 30 head 4 is a lever 5, which may also be of 35 and to main terminal. Another branch 35 magnetic material. Passing loosely through proceeds by wire (Z to the point a, where the said lever is a fixed rod 6, threaded to receive circuit divides. One part proceeds through the stop-nuts 7, by adjusting which the exthe motor-field f to the fixedcontact-terminal tent of outward throw of lever 5 may be regu- 11 and so by wire a (circuit being closed by 5 lated. Near the upper end of lever 5 is a relever 5) to main terminal. The other part 4 cess 8, having inclined sides and constructed proceeds through the motor-armature g to the to receive the edge of the upper head 3. In contact-plates 19 to 23 and resistances A B C said edge is an adjustable screw 9, which serves D to arm 18 and so by wire it to terminal 11. to determine the extent of inward throw of le- The operation is as follows: The switches 9 ver 5. At the upper end of said lever is a pin 3a 35 being closed, the solenoid 1 is energized,

disposed in a sleeve of insulating material and raises its core, and thus by bringing the having a broad face 10, which when the lever rounded edge 16 of the opening in the bar 15 is suitably swung on its pivot may make conagainst the bent lower end 5* of lever 5 moves the plate on said lever into contact with the fixed terminal 11. Circuit is thus established directly through the motor-field f and by Way of all the resistances A B C D through the motor-armature As the core continues to rise the said resistances are successively cut out of circuit, and the motor gradually increases in speed until running speed is attained, When the arm 18 comes to rest on plate 23. The bar holds the circuit mechanically closed at 10 11. WVhen the circuit is broken at switch 34 to stop the motor, the arm 18 descends, cutting the resistances successively into circuit, and finally When the rounded edge 16" on the opposite side of the opening in bar 5 meets the outer side of the bent lower portion 5 of lever 5 said lever is positively moved outwardly, thus interrupting the circuit at 10 11. The dash-pot operates in the usual Way to prevent shock and sudden movement of the parts.

I claim 1. The combination of resistances, a sliding arm constructed to cut the same into and out of circuit, an independent circuit-closer in circuit With said resistances and arm, a single electromagnet, and means controlled by said magnet for mechanically closing said circuitcloser and actuating said arm to vary said resistances.

2. The combination of resistances, a sliding arm constructed to cut the same into and out of circuit, an independent circuit-closer in circuit With said resistances and arm, a single electromagnet, and means controlled by said magnet for, (first,) mechanically closing said circuit-closer; (second,) holding the same in closed position, and,(third,) actuatingsaid arm to vary said resistances.

3. A solenoid, a core, a series of fixed contacts and intermediate resistances, an arm actuated by said core to slide over said contacts and a separate circuit-closer controlled by said core and constructed to close circuit through said contacts, resistances and sliding arm.

L. A solenoid, a core, a series of fixed contacts and intermediate resistances, an arm actuated by said core to slide over said contacts and a separate circuit-closer mechanically operated by said core and constructed to close circuit through said contacts, resistances and sliding arm.

5. A solenoid, a core, a bar carried by said core, an arm carried by said bar, a series of fixed contacts and resistances traversed by said arm, and a swinging circuit-closing lever constructed to be mechanically operated by said bar to open and close circuit through said arm, contacts and resistances.

6. A solenoid, a core, a pivoted circuit-closing lever disposed at one side of said solenoid, a series of fixed contacts and resistances at the other side, an arm constructed to slide over said contacts and a transverse bar supported by the solenoid-core and carrying said arm at one end, and having its opposite end constructed to meet and actuate said lever; the said lever being constructed to close circuit through said contacts, resistances and arm.

7. A solenoid, a core, a series of lixed contacts and intermediate resistances, an arm actuated by said core to slide over said contacts, a separate circuit-closer constructed to control circuit through said contacts, resistances and sliding arm and means for positively actuating said circuit-closer to open and close said circuit.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

AUGUST SUNDH. \Vitnesses:

M. H. SIEGMAN, I. A. VAN WART. 

